AN ENCYCLOPADIA 
OF HORTICULTURE. 177 
Polemonium—continued. 
species of ornamental, tall or dwarf, hardy, perennial or 
rarely annual herbs, natives of Europe, temperate Asia, 
North America, Mexico, and Chili. Flowers blue, violet, 
or white, generally showy; calyx campanulate, five-fid ; 
corolla shortly funnel-shaped, broadly campanulate, or 
sub-rotate, with obovate lobes; cymes terminal, loosely 
corymbose or sub-capitate. Leaves alternate, pinnatisect. 
Rhizomes usually creeping, thick or slender. The best- 
known species are described below. They are all 
perennials, and are of easy cultivation in any good garden 
soil, but flourish best in a deep, rich, and well-drained 
loam. Propagated very readily by division. 
Fig. 213. FLOWERING STEM OF POLEMONIUM CÆRULEUM. 
P. cæruleum (blue).* Charity; Greek Valerian ; Jacob’s Ladder. 
A. normally blue, erect, corymbose, with roundish-oval, obtuse 
Early summer. Zł. pinnate; leaflets ovate-lanceolate, 
nate, brous. Stem glabrous, angular and fistular, 
i. 2ft. Northern hemisphere (Britain).- An elegant border 
perennial, of which there are numerous varieties, varying chiefly 
ae colour of the flowers. See Fig. 213. (Sy. En. B. 922) 
A handsome form is that having Granted e and white 
flowers. 
P. c. dissectum (dissected). Z. bi — leaflets petiolate, pin- 
natitid ; segments linear. (S. F. G. 182, under name of 
P. sibiricum. ) 
P. confertum (clustered).* /l. rich blue, PERRE E aboni żin. 
across, —— on the ends of ind — —— l. linear, 
innate ; pinnæ very numerous and overlap; varying from 
er SAY bee to linear-oblong. h. 6in. Rocky Mountains, &e., 
1885. See Fig. 214. (G. C.n. s., xxiv. 3.) 
Pe — (dwarf).* 
corymbose panicles ; 
Vol. OL 
P, mexicanum 
sub-rotate-campanulate. April. innate, 
fl. blue or pi ie eoin. sub- - 
segments of — — pies 3 
E AAO 
l, leaflets ovate, obtuse, mostly radical, and with a faint smell 
of musk. Stems many, leafy, downy. h. 6in. Rocky Mountains, 
1827. SYNS. P. Richardsonii (B. M. — and P. villosum 
— B. F. G. 266). 
h. pulchellum (pretty). /l. smaller than in the type : corolla 
— violet or lavender- ae in some forms nearly white, only 
two-to three lines long. L, — often nearly glabrous and 
naked Syn. P. pulcherrimum (B. M. 2979). 
Fie. 214. Pourwoxtum convention, showing Habit and 
tached Flower. 
(Mexican). fi. —* few 
ovate blong. Stem joosel: — h h. ; 
a, 18 Plan : p brane r R. 460.) 
P. pulcherrimum (very pretty) A synonym of P. humile 
pulchellum. 
Fig. 215. no REPTANS, — Habit and Portion of 
detached Inflorescence. 
P. (creeping). * f blue, ——— * drooping, dis- 
in a loose, ; segments of corolla cuneate. 
April. L pinnate ; Sa bona to eleven, ovate, acute, 
glabrous. Stems leafy, glabrous. Root creeping. h. 6in. North : 
‘America, 1758. See Fig. 215. (B. M. 1887.) 
P. Richardsonii (Richardson's). A synonym of P. humile. 
2 villosum (villous). A synonym of P. humile, 
POLIA. A synonym of Cypella. 7 
(name given by Linnæus, probably = 
POLIANTHES : 
from polios, white, and anthos, a flower; alluding to — 
colour of the blossoms). lyanth 
Pe ‘Pol 
